Design of the inverse function delayed neural network for solving combinatorial optimization problems

Yoshihiro Hayakawa, Koji Nakajima

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


We have already proposed the inverse function delayed (ID) model as a novel neuron model. The ID model has a negative resistance similar to Bonhoeffervan der Pol (BVP) model and the network has an energy function similar to Hopfield model. The neural network having an energy can converge on a solution of the combinatorial optimization problem and the computation is in parallel and hence fast. However, the existence of local minima is a serious problem. The negative resistance of the ID model can make the network state free from such local minima by selective destabilization. Hence, we expect that it has a potential to overcome the local minimum problems. In computer simulations, we have already shown that the ID network can be free from local minima and that it converges on the optimal solutions. However, the theoretical analysis has not been presented yet. In this paper, we redefine three types of constraints for the particular problems, then we analytically estimate the appropriate network parameters giving the global minimum states only. Moreover, we demonstrate the validity of estimated network parameters by computer simulations.

Original languageEnglish
Article number5352267
Pages (from-to)224-237
Number of pages14
JournalIEEE Transactions on Neural Networks
Issue number2
Publication statusPublished - 2010 Feb


  • Combinatorial optimization problem
  • Negative resistance
  • Neural network

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Artificial Intelligence


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